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Business Segments (Detail Textuals) - USD ($)
$ in Thousands
Jun. 30, 2019
Jun. 30, 2018
Segment Reporting Information [Line Items]    
Equity method investments $ 4,196 $ 3,944
Animal Health    
Segment Reporting Information [Line Items]    
Equity method investments 3,287 3,432
Performance Products    
Segment Reporting Information [Line Items]    
Equity method investments $ 759 $ 437